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Viewing changes to Web.activity/sessionhistory.py

  • Committer: Bazaar Package Importer
  • Author(s): Jani Monoses
  • Date: 2008-01-31 15:17:08 UTC
  • Revision ID: james.westby@ubuntu.com-20080131151708-4tegqfae3vdhiylk
Tags: upstream-85
Import upstream version 85

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Web.activity/sessionhistory.py
 
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# Copyright (C) 2007, One Laptop Per Child
 
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#
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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#
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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#
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
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import logging
 
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import gobject
 
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import xpcom
 
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from xpcom.components import interfaces
 
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class HistoryListener(gobject.GObject):
 
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    _com_interfaces_ = interfaces.nsISHistoryListener
 
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    __gsignals__ = {
 
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        'session-history-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
 
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                                    ([int])),
 
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        'session-link-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
 
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                                    ([str]))
 
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    }
 
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    def __init__(self, browser):
 
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        gobject.GObject.__init__(self)
 
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        self._wrapped_self = xpcom.server.WrapObject(self, interfaces.nsISHistoryListener)
 
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        weak_ref = xpcom.client.WeakReference(self._wrapped_self)
 
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        self._session_history = browser.web_navigation.sessionHistory
 
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        self._session_history.addSHistoryListener(self._wrapped_self)
 
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    def OnHistoryGoBack(self, back_uri):
 
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        logging.debug("OnHistoryGoBack: %s" % back_uri.spec)
 
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        self.emit('session-link-changed', back_uri.spec)
 
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        self.emit('session-history-changed', self._session_history.index - 1)
 
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        return True
 
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    def OnHistoryGoForward(self, forward_uri):
 
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        logging.debug("OnHistoryGoForward: %s" % forward_uri.spec)
 
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        self.emit('session-link-changed', forward_uri.spec)
 
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        self.emit('session-history-changed', self._session_history.index + 1)
 
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        return True
 
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    def OnHistoryGotoIndex(self, index, goto_uri):
 
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        logging.debug("OnHistoryGotoIndex: %i %s" % (index, goto_uri.spec))
 
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        self.emit('session-link-changed', goto_uri.spec)
 
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        self.emit('session-history-changed', index)
 
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        return True
 
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    def OnHistoryNewEntry(self, new_uri):
 
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        logging.debug("OnHistoryNewEntry: %s" % new_uri.spec)
 
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        self.emit('session-link-changed', new_uri.spec)
 
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        self.emit('session-history-changed', self._session_history.index + 1)
 
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    def OnHistoryPurge(self, num_entries):
 
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        logging.debug("OnHistoryPurge: %i" % num_entries)
 
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        #self.emit('session-history-changed')
 
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        return True
 
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    def OnHistoryReload(self, reload_uri, reload_flags):
 
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        self.emit('session-link-changed', reload_uri.spec)
 
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        logging.debug("OnHistoryReload: %s" % reload_uri.spec)
 
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        return True
 
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_session_history_listener = None
 
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def init(browser):
 
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    global _session_history_listener
 
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    _session_history_listener = HistoryListener(browser)
 
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def get_instance():
 
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    global _session_history_listener
 
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    return _session_history_listener